Cognomen Пилоян (Пилоян 
, Piloyan 
, Piloian 
) , in all the world, is quite a rare last name. The last name Пилоян is characteristic of Armenia, where it is quite a rare surname, Georgia, and Russia, where it is a rare surname. Also, Пилоян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Пилоян | Russia, Belarus, Kazakhstan, Ukraine, Armenia |
| Piloyan | Russia, Greece, Armenia, United States, Mexico |
| Piloian | Georgia, Lithuania, United States |